Malicious PDF — malware analysis report

Static analysis result for SHA-256 10ee164917cd040a…

MALICIOUS

PDF

74.7 KB Created: 2021-02-16 12:54:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c5b03e95bbcfdddcd8fdf52cb7e97130 SHA-1: 4ae845cab3468c49fd8ee901d878505597287ef2 SHA-256: 10ee164917cd040aa855bf95fdda1c16c919a82677f62dbad3ed218ab1d69d80
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crophysi.ru/wb?keyword=definicion%20de%20inteligencia%20emocional%20segun%20diferentes%20autores In PDF document text
    • https://cdn.sqhk.co/gogojiranat/zOgiIJG/kabapiwivimomopirodo.pdfIn PDF document text
    • https://gagavupotiwek.weebly.com/uploads/1/3/0/8/130813998/00979d2ff4.pdfIn PDF document text
    • https://semototip.weebly.com/uploads/1/3/5/3/135386148/31c12ed5235f13.pdfIn PDF document text
    • https://cdn.sqhk.co/zewumabigige/jgf3jgf/19014102683.pdfIn PDF document text
    • https://cdn.sqhk.co/levowexesu/onpWiip/vuzolixasagaxapipekur.pdfIn PDF document text
    • https://cdn.sqhk.co/zerumowo/juAOlid/tamil_trending_status_video_download_sharechat.pdfIn PDF document text
    • https://cdn.sqhk.co/pawosuku/Egchkw5/the_advisors_alliance_ep_9_eng_sub.pdfIn PDF document text
    • https://pazibeze.weebly.com/uploads/1/3/1/6/131636707/236076.pdfIn PDF document text
    • http://losasawavezu.iblogger.org/jejotelojavonu.pdfIn PDF document text
    • http://rarurude.22web.org/beautiful_s_letter_hd_images.pdfIn PDF document text
    • https://cdn.sqhk.co/zejovedelali/Diaif68/uefa_champions_league_2020_group_stage_schedule.pdfIn PDF document text
    • https://cdn.sqhk.co/devepogisog/I8jhSjf/fidget_spinners_for_sale_on_ebay.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/mavixu/83981798969.pdfIn PDF document text
    • http://sulanulug.epizy.com/latest_firefox_browser_for_windows_10.pdfIn PDF document text
    • http://jidaxel.rf.gd/hnge_birke_blattform.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/counter_terrorist_mod_apk_uptodown.pdfIn PDF document text
    • https://s3.amazonaws.com/zidenigad/popadunam.pdfIn PDF document text
    • http://tedusola.epizy.com/43081983465.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e355.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE355 5340 bytes
SHA-256: eb349ac3debf8d8d0bc3ee41769879b8f3524421091f13ac6e368ef89c2986c9
font_01_sfnt_off0000f575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF575 11640 bytes
SHA-256: d08570a60183bf3da49c316543934fa50f7e552cdc5fb181227bcb8957d50e0a

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